java递归解析xml_Java Dom 递归解析XML

package com.bryant.xml;

import java.io.File;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

import org.w3c.dom.NamedNodeMap;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

/**

bryant

tu

25

No.1

*

*/

public class TestDom

{

public static void main(String[] args) throws Exception

{

parse("E:\\student.xml");

}

static void parse(String path) throws Exception

{

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

DocumentBuilder builder = factory.newDocumentBuilder();

Document doc = builder.parse(new File(path));

Element root = doc.getDocumentElement();

parse(root);

}

static void parse(Element element)

{

String nodeName = element.getNodeName();

System.out.print("

parseAttr(element);

System.out.print(">");

NodeList nodeList = element.getChildNodes();

if (nodeList != null)

{

int length = nodeList.getLength();

for (int i = 0; i < length; i++)

{

Node node = nodeList.item(i);

short nodeType = node.getNodeType();

if (nodeType == Node.ELEMENT_NODE)

{

//递归

parse((Element) node);

}

else if (nodeType == Node.TEXT_NODE)

{

//这里会读出\n\t,所以打印不用换行

System.out.print(node.getNodeValue());

}

else if (nodeType == Node.COMMENT_NODE)

{

System.out.print("");

}

}

}

System.out.print("" + nodeName + ">");

}

static void parseAttr(Element element)

{

NamedNodeMap attrMap = element.getAttributes();

if (attrMap != null && attrMap.getLength() > 0)

{

System.out.print(" ");

int length = attrMap.getLength();

for (int i = 0; i < length; i++)

{

Node attr = attrMap.item(i);

String attrName = attr.getNodeName();

String attrValue = attr.getNodeValue();

if (i > 0)

{

System.out.print(" ");

}

System.out.print(attrName + "=\"" + attrValue + "\"");

}

}

}

}